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IAUC 6664: GRB 970508; C/1997 J2

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                                                 Circular No. 6664
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/cfa/ps/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


GRB 970508
     D. S. Shepherd, M. R. Metzger, and S. R. Kulkarni, California
Institute of Technology, write:  "We have monitored the region of
GRB 970508 at 86.8 GHz with the Owens Valley Radio Observatory
Interferometer (low-resolution configuration; synthesized beam of
diameter about 5") from May 10 to 15.  We first mosaicked a 40" x
40" region centered on the x-ray source SAX J0653.8+7916 (IAUC
6656), including the optical counterpart (IAUC 6654, 6655), from
observations made during May 10.92-11.38 UT (map rms 3.6 mJy/beam)
and May 11.81-12.53 (map rms 2.6 mJy/beam); no obvious sources were
detected in either map.  We then observed a single field centered
on R.A. = 6h53m47s.11, Decl. = +79o16'08".2 (equinox 2000.0) during
May 13.01-13.9 (map rms 1.3 mJy/beam) and May 15.22-15.90 (map rms
2.27 mJy/beam).  The optical transient was within 15" of this
pointing center, and thus there was no significant loss in the
primary beam response; no source was detected in either observation;
the 3-sigma upper limits are 3.9 and 6.8 mJy/beam, respectively."


COMET C/1997 J2 (MEUNIER-DUPOUY)
     Improved parabolic orbital elements from MPEC 1997-K05:

1997 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
May  12    10 51.2    +73 42.5   4.278   4.204   79.0   13.6   12.9
     22    10 47.5    +73 09.4   4.301   4.142   74.2   13.6   12.8
June  1    10 48.6    +72 29.7   4.316   4.082   70.0   13.5   12.8
     11    10 54.1    +71 46.2   4.320   4.022   66.3   13.4   12.7
     21    11 03.3    +71 00.7   4.312   3.963   63.4   13.3   12.7
July  1    11 15.9    +70 14.2   4.291   3.905   61.2   13.2   12.6
     11    11 31.48   +69 26.9   4.257   3.848   59.8   13.2   12.5
     21    11 49.63   +68 38.6   4.211   3.793   59.2   13.3   12.4
     31    12 10.15   +67 48.7   4.153   3.738   59.3   13.5   12.3
Aug. 10    12 32.86   +66 56.3   4.084   3.685   60.1   13.8   12.2
     20    12 57.56   +66 00.1   4.007   3.634   61.5   14.2   12.1
     30    13 24.09   +64 58.7   3.923   3.584   63.2   14.6   12.0
Sept. 9    13 52.24   +63 50.3   3.835   3.535   65.3   15.0   11.9

                      (C) Copyright 1997 CBAT
1997 May 19                    (6664)            Daniel W. E. Green

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